.slider-container {
  width: 35.9rem;
  margin: 21px auto;
  position: relative;
  height: 46px;
  user-select: none;
}

/* 滑轨：一块一块的 */
.slider-track {
  position: absolute;
  bottom: 50%;
  width: 100%;
  display: flex;
  justify-content: space-between;
  height: 0.3rem;
}

.track-block {
  width: 13%;
  cursor: pointer;
  height: 100%;
  background: var(--dm-color-primary);
}

/* 滑块圆点 */
.slider-thumb {
  position: absolute;
  top: 45%;
  width: 1.8rem;
  height: 1.8rem;
  background: var(--dm-color-primary);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  cursor: pointer;
  z-index: 5;
}

/* 字母标记 */
.slider-labels {
  top: 60%;
  display: flex;
  justify-content: space-around;
  position: absolute;
  width: 100%;
  font-size: 1.6rem;
  color: var(--dm-gray-400);
  font-weight: bold;
}

.slider-labels span {
  position: relative;
  display: inline-block;
  text-align: center;
}

/* 显示选中字母 */
.selected-letter {
  margin-top: 120px;
  text-align: center;
  font-size: 24px;
  font-weight: bold;
}
